why amplitude raised do to covolution?

[sapanssonar]

when we do convolution of two signal, resultant signal amplitude raised, why?
e.g
temp= template
eeg= eeg signal

when we perform matched filtering on both resultant wave very high amplitude why???

 

[preethi_k4]

In convolution the basic operation is integration of the signal, integration is nothing but summation of the signals. Each point in the sample amounts to integration of the symbol up to the point.